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Re: [Xen-users] Crashing PV DomU, Can't find the reason

Emre Erenoglu wrote:
> Hi,
> I have a Paravirtual DomU crashing on me at bootup on a newly setup Ubuntu
> 7.10 system. The system has 2.6.22-14-xen kernel and Xen 3.1. HVM guests
> are
> OK.
> I was running perfectly OK with this system at Ubuntu 7.10's beta stages,
> when there was 2.6.22-12-xen kernel, but when Gutsy is officially
> launched,
> I decided to wipe out my Dom0 and reinstall it. It came with kernel
> 2.6.22-14-xen and now crashing on me at bootup.
> In order to make sure that it's not Ubuntu specific, I installed Fedora 8
> with 2.6.21 Dom0 kernel. I ran this DomU with  2.6.23 standard and
> 2.6.21Dom0 kernels. No change, always same crash. So it seems that
> there's some
> issue here.
> Here's some log from the boot about the crash. It seems that something is
> related with atomic-ops, maybe it's possible to fix it within the DomU.
> [snip]
> [  186.548525] ------------[ cut here ]------------
> [  186.548528] kernel BUG at /build/buildd/linux-source-2.6.22-2.6.22
> /debian/bui
> ld/custom-source-xen/arch/i386/mm/highmem-xen.c:38!
> [  186.548530] invalid opcode: 0000 [#2]
> [  186.548532] SMP
> [snip]

I get the above issue too. Interestingly, last time dom0 crashed, but domUs
were still working fine. I just did an apt-get update/upgrade and libc6-xen
changed. I sure hope this solves the problem.

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